body {
  position: relative;
}

body .top-top {
  position: fixed;
  top: 0;
  left: 0;
  height: 50px;
  width: 100%;
  box-shadow: #000 0 1px 5px;
  background-color: white;
  display: none;
}

body .top-top .center {
  display: flex;
  align-items: center;
}

body .top-top .center .caidan {
  width: 200px;
  height: 40px;
  background-color: #f2f2f2;
  line-height: 40px;
  margin-top: 5px;
}

body .top-top .center .caidan img {
  margin-left: 40px;
}

body .top-top .center .caidan a {
  color: #c5c5c5;
}

body .top-top .center .search {
  margin-left: 164px;
}

body .top-top .center .search > form {
  display: flex;
}

body .top-top .center .search > form > div {
  width: 62px;
  height: 30px;
  border: 1px solid #b20fd3;
  text-align: center;
}

body .top-top .center .search > form > div a {
  color: #c5c5c5;
}

body .top-top .center .search > form > input {
  width: 340px;
  height: 30px;
  border-top: 1px solid #b20fd3;
  border-bottom: 1px solid #b20fd3;
}

body .top-top .center .search > form > button {
  width: 92px;
  height: 32px;
  background-color: #b20fd3;
}

body .top-top .center .search > form > button a {
  color: white;
  font-size: 18px;
}
